Of 46 counties in the state, Union County ranks 32nd by size (516 square miles). Union County is in Upstate South Carolina. South Carolina's Union County has almost 1,000 acres of horse farms for sale based on recent Land Network data. The combined market value of land and rural real estate for sale here was around $800,000. Browse all Union County horse farms for sale on the Land Network to find the equestrian property that's right for your future needs, whether you're a horse breeder, equestrian business or simply horse lover looking for stable facilities, grooming pens or grazing pasture for your own horses. The most common type of land for sale by combined acreage in Union County is residential property.